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| 1 | Trait variation in response to resource availability and plant diversity modulates functional dissimilarity among species in experimental grasslands显示文摘Aims Functional trait differences among species are thought to be a pre-requisite for niche differentiation.Plant traits are known to vary plastically in response to environmental conditions and different plant neighbours.However,it is not clear to which extent the direc-tion and magnitude of trait variation differ among species repre-senting different growth forms or varying dominance in different environments and how this trait variation affects community-level trait dissimilarity.Methods In a field experiment,we studied shoot and leaf traits of eight peren-nial grassland species assigned to two functional groups(grasses vs.forbs)and varying in growth stature(small vs.tall)in monocultures,two-and four-species mixtures that were exposed to two levels of light(shaded vs.full light)and nutrient availability(fertilized vs.non-fertilized)to address this gap of knowledge.Important Findings Fertilization increased leaf greenness and specific leaf area(SLA)as well as tissue nitrogen concentrations.Under shading,changes in morphological and physiological light-acquisition traits as well as increased nitrogen and decreased carbon concentrations in plant tissue indicated larger efforts to acquire light and carbon limita-tion of plant growth.Similar changes in light-acquisition traits as observed under shading and decreasing shoot biomass also revealed an accelerated carbon limitation at higher species rich-ness(SR)irrespective of the external manipulation of light and nutrient supply.Overall,the direction of trait variation in response to resource availability(shade,fertilization)and SR did not differ between functional groups or growth statures.The magnitude of variation in several traits at different resource availability,however,was larger in grasses than in forbs as well as in small-statured than in tall-statured species.In general,dominant species in terms of above-ground biomass production had taller shoots with higher carbon and lower nitrogen concentrations and allocated less biomass into leaves than subordinates.The expression of leaf traits of dominants(lower SLA and higher leaf greenness than subordinates)indicated their competitive advantage in light acquisition.Shading,as well as fertilization,accentuated trait differences between dominants and subordinates.Fertilization increased community-level dissimilarity in tissue nitrogen concentrations due to differential responses of functional groups and growth statures.However,resource supply did not alter community-level dissimilarity in other traits.Our study shows that a varying extent of trait variation of species belonging to different functional groups or growth statures and varying in their ability to achieve dominance may modulate community-level trait dissimilarity at different resource availability.These results empha-size the importance to consider the context-dependency of trait-based approaches. | Alrun Siebenkäs Jens Schumacher Christiane Roscher | 2017 | Journal of Plant Ecology2017，10，6： | 2 |
| 2 | Reduced serum L-ficolin in paediat ricpatients with recurrent respiratory infection 显示文摘 | Lynch NJ Roscher S Schwaeble WJ | 2007 | Molec Immunol2007，，44： | 1 |
| 3 | L-ficolin specifically binds to lipoteiehoic acid, a cell wall constituent of Gram-positive bacteria, and activates the lectin pathway of complement显示文摘 | Lynch N J Roscher S Hartung T | 2004 | J Immunol2004，172，2： | 1 |
| 4 | Decoupling of carbohydrate binding and MASP 2 autoactivation in variant mannose-binding lectins associated with immuno-deficiency显示文摘 | WallisR Lynch NJ Roscher S | 2005 | J Immunol2005，175，10： | 1 |
| 5 | Reliable state estimation of multicell lithium-ion battery systems显示文摘 | Roscher M A Bohlen O S Sauer D U | 2011 | IEEE Trans on Energy Conversion2011，26，3： | 1 |
| 6 | In vivo 13C NMR determines metabolic fluxes and steady state in linseed embryos显示文摘 | TROUFFLARD S ROSCHER A THOMASSET B | 2007 | Phytochemistry2007，68，： | 1 |
| 7 | Effects of sodium fluoride and alendronate on the bone mineral in minipigs: a samll-angle X-ray scattering and backscattered electron imaging study显示文摘 | SCHREIBER S ROSCHER P | 1996 | J Bone Min Res1996，11，： | 1 |
| 8 | Reduced serum L-ficolin in paediatric patients with recurrent respiratory infection显示文摘 | Lynch NJ Roscher S Schwaeble WJ | 2007 | Molec Immunol2007，，44： | 1 |
| 9 | Relation of olfactory event related potentials to chan ges in stimulus concentration显示文摘 | TATEYAMA T HUMMEL Y ROSCHER S | 1998 | Elctroencephalogr Clin Neurophysiol1998，108，： | 1 |
| 10 | L - ficolin specifically binds to lipoteichoic acid, a cell wall constituent of gram - positive bacteria, and activates the lectin pathway of complement 显示文摘 | Lynch N J Roscher S Hartung T | 2004 | J Immunol2004，172，2： | 1 |
| 11 | L-ficolin speci- fically binds to lipoteichoic acid, a cell wall constituent of Gram-positive bacteria, and activates the lectin path- way of complement显示文摘 | Lynch N J Roscher S Hartung T | 2004 | J Immunol2004，172，2： | 1 |
| 12 | In vivo 13C NMR determines metabolic fluxes and steady state in linseed embryos显示文摘 | Troufflard S Roscher A Thomasset B | 2007 | Phytochemistry2007，68，1618： | 1 |
| 13 | Complementary nitrogen use among potentially dominant species in a biodiversity experiment varies between two years 显示文摘 | Roscher C Thein S Schmid B | 2008 | Journal of Ecology2008，96，3： | 1 |
| 14 | Metabolic diseases and their possible link to risk indicators of periodontitis显示文摘 | Noack B Jachmann I Roscher S | 2000 | J Periodontol2000，71，6： | 1 |
| 15 | A unified nomenclature for peroxisome biogenesis factors显示文摘 | Distel B Erdmann R Gould SJ Blobel G Crane DI Cregg JM Dodt G Fujiki Y Goodman JM Just WW Kiel JA Kunau WH Lazarow PB Mannaerts GP Moser HW Osumi T Rachubinski RA Roscher A Subramani S Tabak HF Tsukamoto T Valle D van der Klei I van Veldhoven PP Veenhuis | | 0，，： | 1 |
| 16 | Effects of sodium fluoride and alendronate on the bone mineral in minipigs:a small-angle X-ray scattering and backscattered electron imaging study显示文摘 | Fratzl P Schreiber S Roscher P | 1996 | J Bone Min Res1996，11，： | 1 |
| 17 | Relation of olfactory event-related potentials to changes in stimulus concentration显示文摘 | Hummel T Roscher S | 1998 | Electroencephalogr clin Neurophysiol1998，108，： | 1 |
| 18 | Decoupling of carbohydrate binding and MASP-2 autoactivation in variant mannose-binding lectins associated with immunodeficiency显示文摘 | Wallis R Lynch NJ Roscher S | 2005 | J Immunol2005，175，10： | 1 |
| 19 | L-ficolin specifically binds to lipoteichoic acid, a cell wall constituent of grampositive bacteria, and activates the lectin pathway of complement显示文摘 | Roscher S Hartung T | 2004 | J Immunol2004，172，2： | 1 |
| 20 | Complementary nitro- gen use among potentially dominant species in a biodiversity experiment varies between two years 显示文摘 | Roscher C Thein S Schmid B | 2008 | Journal of Ecolo- gy2008，96，3： | 1 |
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